車載應用中的高品質、高效能音頻CODEC解決方案
新唐科技在智能車載應用市場上進行全方位佈局，深入車載音頻多樣化應用場景，持續推出音頻新產品及解決方案，並發布高性能指標的音頻CODEC與DAC新品。
隨著汽車電子進入「智能座艙」時代，汽車智能化趨勢成為行業熱點，車載應用對音頻產品技術提供商提出越來越高的功能要求。
新唐科技的CODEC產品路線圖如下：
*SR: Sampling Rate
新唐科技嚴格執行汽車行業規範標準，為車載應用提供符合AEC-Q100認證的產品，同時車規級與工規級物料可進行P2P互換。車規級音頻編解碼晶片包括立體聲（NAU88U22）和單聲道（NAU88U10）兩款型號。
在車載系統中常見的T-BOX（eCall）應用中，新唐科技提供的高信噪比多功能CODEC型號，除了滿足音頻ADC/DAC編解碼需求，還內建特定功能的DSP，支援PCM和I2S介面，最高採樣頻率可達48KHz。
進入智能座艙時代，隨著「3D音效」和「沉浸式音效」需求的快速提升，進一步展示了汽車廠商在硬體與軟體領域的實力。因此，從應用角度來看，加強對關鍵元件的選擇（例如：音頻編解碼、音頻功放、音頻DSP等）顯得尤為重要。
在智能座艙中，拾音、行車記錄器、語音識別、聽聲辨位及降噪處理等應用需要將模擬MIC信號轉換為數字訊息，再提供給音效處理單元或車載SOC。在這些應用中，對信噪比和音頻採樣頻率的要求極高；新唐科技可提供多款高性價比的工規及車規型號。其中，廣受關注的型號NAU85L40B，具有多路ADC通道，支援多路復用（TDM）PCM輸出，並採用QFN28L封裝。
在車載前裝應用中，常將SOC或DSP輸出的數字信號轉換為模擬信號，供後端模擬功放使用；而在車載後裝應用中，則常見將數字信號轉換為模擬信號以改裝音箱。這類應用通常會根據後端模擬功放的通道數來決定前端DAC的通道配置。NAU8421為24位立體聲DAC，具有高信噪比128dB，並採用QFN32封裝。
Audio ADC/DAC 產品路線圖
*SR: Sampling Rate
◼️ Audio CODEC Series - Mono CODEC
| Part No | Description | # of ADC | # of DAC | SNR (dB) - ADC |
SNR (dB) - DAC |
THD (dB) - ADC |
THD (dB) - DAC |
Sample Rate (kHz) | Audio Format | Development Tools | Control Interface | Analog/Digital (V) | Package |
| NAU8810 | Mono Audio CODEC | 1 | 1 | 91 | 93 | -79 | -84 | 8 ~ 84 | I2S PCM (TDM) | NAU8810-DEMO | 2-Wire | 2.5 ~ 3.6 1.6 ~ 3.6 |
QFN20 (4x4) |
| NAU88C10 | Mono Audio CODEC | 1 | 1 | 91 | 93 | -79 | -84 | 8 ~ 84 | I2S PCM (TDM) | NAU88C10-DEMO | 2-Wire | 2.5 ~ 3.6 1.6 ~ 3.6 |
QFN20 (4x4) |
| NAU88U10 | Mono Audio CODEC (*AEC-Q100) |
1 | 1 | 91 | 93 | -79 | -84 | 8 ~ 84 | I2S PCM (TDM) | NAU88C10-DEMO | 2-Wire | 2.5 ~ 3.6 1.6 ~ 3.6 |
QFN20 (4x4) |
◼️ Audio CODEC Series - Mono CODEC
| Part No | Description | # of ADC | # of DAC | SNR (dB) - ADC |
SNR (dB) - DAC |
THD (dB) - ADC |
THD (dB) - DAC |
Sample Rate (kHz) | Audio Format | Development Tools | Control Interface | Analog/Digital (V) | Package |
| NAU8812 | Mono Audio CODEC with Speaker Driver | 1 | 1 | 91 | 93 | -79 | -84 | 8 ~ 48 | I2S PCM (TDM) | NAU8812-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (5x5) SSOP-28 |
| NAU8814 | Mono Audio CODEC with Speaker Driver, Equalizer | 1 | 1 | 91 | 93 | -79 | -84 | 8 ~ 48 | I2S PCM (TDM) | NAU8814-DEMO | 2-Wire 3-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN24 (4x4) |
| NAU88C14 | Mono Audio CODEC with Speaker Driver, Equalizer | 1 | 1 | 91 | 93 | -79 | -84 | 8 ~ 48 | I2S PCM (TDM) | NAU88C14-DEMO | 2-Wire 3-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN24 (4x4) |
◼️ Audio CODEC Series - Stereo CODEC
| Part No | Description | # of ADC | # of DAC | SNR (dB) - ADC |
SNR (dB) - DAC |
THD (dB) - ADC |
THD (dB) - DAC |
Sample Rate (kHz) | Audio Format | Development Tools | Control Interface | Analog/Digital (V) | Package |
| NAU8820 | Stereo Audio CODEC | 2 | 2 | 90 | 94 | -80 | -84 | 8 ~ 48 | I2S (PCM/TDM) | NAU8820-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (5x5) |
| NAU8822A | Stereo Audio CODEC with Speaker Driver | 2 | 2 | 90 | 94 | -80 | -84 | 8 ~ 48 | I2S (PCM/TDM) | NAU8822A-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (5x5) |
| NAU88U22A | Stereo Audio CODEC with Speaker Driver (*AEC-Q100) | 2 | 2 | 90 | 94 | -80 | -84 | 8 ~ 48 | I2S (PCM/TDM) | NAU8822A-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (5x5) |
| NAU88C22 | Stereo Audio CODEC with Speaker Driver | 2 | 2 | 89 | 89 | -78 | -84 | 8 ~ 48 | I2S (PCM/TDM) | NAU88C22-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (4x4) QFN32 (5x5) |
◼️ Audio CODEC Series - ULP (Ultra Low Power) CODEC
| Part No | Description | # of ADC | # of DAC | SNR (dB) - ADC |
SNR (dB) - DAC |
THD (dB) - ADC |
THD (dB) - DAC |
Sample Rate (kHz) | Audio Format | Development Tools | Control Interface | Analog/Digital (V) | Package |
| NAU88L11 | ULP Mono Audio CODEC with Class-G Headphone Driver | 1 | 1 | 103 | 105 | -93 | -85 | 8 ~ 96 | I2S PCM(TDM) | NAU88L11-DEMO | 2-Wire | 1.6 ~ 2.0 1.6 ~ 3.6 |
QFN20 (4x4) |
| NAU88L20 | ULP Stereo CODEC with Stereo Differential Lineout Driver | 2 | 2 | 98 | 100 | -91 | -85 | 8 ~ 96 | I2S PCM(TDM) | NAU88L20-DEMO | 2-Wire | 2.5 ~ 3.6 2.5 ~ 3.6 |
QFN32 (4x4) |
| NAU88L21 | ULP Stereo CODEC with Class-G Headphone Driver | 2 | 2 | 103 | 105 | -91 | -80 | 8 ~ 192 | I2S PCM(TDM) | NAU88L21-DEMO | 2-Wire | 1.6 ~ 2.0 1.6 ~ 3.6 |
QFN32 (4x4) QFN32 (5x5) |
| NAU88L21C | ULP Stereo Audio CODEC with Class-G Headphone Driver | 2 | 2 | 103 | 105 | -93 | -85 | 8 ~ 192 | I2S PCM(TDM) | - | 2-Wire | 1.6 ~ 2.0 1.6 ~ 3.6 |
QFN32 (5x5) |
| NAU88L24 | ULP Stereo Audio CODEC with Advanced Headset Feature Class-D Amp | 2 | 2 | 100 | 103 | -85 | -77 | 8 ~ 96 | I2S PCM(TDM) | NAU88L24l-DEMO | 2-Wire | 1.6 ~ 2.0 1.6 ~ 3.6 |
QFN48 (6x6) QFN48 (7x7) WLCSP56 |
| NAU88L25B | ULP Stereo Audio CODEC with Advanced Headset Feature & Detection Class-G Headphone Driver | 1 | 2 | 101 | 124 | -91 | -89 | 8 ~ 192 | I2S PCM(TDM) | NAU88L25-DEMO | 2-Wire | 1.6 ~ 2.0 1.6 ~ 3.6 |
QFN32 (5x5) WLCSP42 |
◼️ Audio ADC Series
| Part No. | Description | # of ADC | # of DAC |
SNR (dB) - ADC |
SNR (dB) - DAC |
THD (dB) - ADC |
THD (dB) - DAC |
Sample Rate (kHz) | Audio Format | Development Tools | CTRL I/F | Analog/Digital (V) | Package |
| NAU8501 | Stereo Audio ADC with Line Input Differential Microphone Inputs | 2 | - | 90 | - | -80 | - | 8 ~ 48 | I2S PCM(TDM) | NAU8501-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (4x4) |
| NAU8502 | Stereo Audio ADC with Differential Microphone Inputs | 2 | - | 90 | - | -80 | - | 8 ~ 48 | I2S PCM(TDM) | NAU8502-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (5x5) |
| NAU85L20B | ULP Stereo Audio ADC with Integrated FLL Microphone Preamplifier | 2 | - | 101 | - | -91 | - | 8 ~ 96 | I2S PCM(TDM) | NAU85L20-DEMO | 2-Wire 3-Wire |
1.6 ~ 2.0 1.6 ~ 3.6 |
QFN28 (4x4) |
| NAU85L40B | ULP Quad Audio ADC with Integrated FLL Microphone Preamplifier | 4 | - | 101 | - | -91 | - | 8 ~ 96 | I2S PCM(TDM) | NAU85L40-DEMO | 2-Wire 3-Wire |
1.6 ~ 2.0 1.6 ~ 3.6 |
QFN28 (4x4) |
◼️ Audio DAC Series
| Part No. | Description | # of ADC | # of DAC |
SNR (dB) - ADC |
SNR (dB) - DAC |
THD (dB) - ADC |
THD (dB) - DAC |
Sample Rate (kHz) | Audio Format | Development Tools | CTRL IF | Analog/Digital (V) | Package |
| NAU8401 | Stereo Audio DAC with Speaker Driver | - | 2 | - | 94 | - | -84 | 8 ~ 48 | I2S PCM(TDM) | NAU8401-DEMO | 2-Wire 3-Wire 4-Wire |
2.5 ~ 3.6 1.6 ~ 3.6 |
QFN32 (5x5) |
| NAU8402 | Stereo Audio DAC with 2Vrms Line Output | - | 2 | - | 98 | - | -82 | 24 ~ 96 | I2S PCM(TDM) | NAU8402-DEMO | - | 3.0 ~ 3.6 1.6 ~ 3.6 |
TSSOP 16 |
| *NAU8421 | Stereo Audio DAC with 8Vpp Differential Output | - | 2 | - | 122 | - | -100 | 8 ~ 192 | I2S PCM(TDM) | - | 2-Wire | - | QFN32 (5x5) |
*Under Development
◼️ Precision ADC Series
|
Part No. |
Description | # of ADC | # of DAC | Resolution Bits | ADC Type | ENOB (Gain=1, 10 SPS) | RMS Noise (PGA=128) |
Sample Rate Max (Hz) | Gain | Development Tools | CTRL IF | Analog/Digital (V) | Package |
| NAU7802 | Precision Audio ADC | 2 | - | 24 | Sigma-Delta | 23 | 50 nV in 10 SPS 150 nV in 80 SPS |
10, 20, 40, 80 & 320 | 1x, 2x, 4x, 8x, 16x, 32x, 64x, 128x | NAU7802-EVB | 2-Wire | 2.7 ~ 5.5 2.7 ~ 5.5 |
SOP16 PDIP16 |
*SR: Sampling Rate
本期主要介紹車載應用中的音頻CODEC、ADC/DAC解決方案，請大家繼續關注，後續我們還將持續推出並推薦新唐科技在消費類應用中的新產品及解決方案。
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